human race vs humanity

human race and humanity both are nouns.

Word	Noun	Adjective	Verb	Adverb
human race	Yes	No	No	No
humanity	Yes	No	No	No

As nouns, human race and humanity are synonyms defined as:

human race and humanity: all of the living human inhabitants of the earth

Other synonyms of human race include human beings, humankind, humans, man, mankind, world.

human race (noun)	humanity (noun)
all of the living human inhabitants of the earth	all of the living human inhabitants of the earth
	the quality of being humane
	the quality of being human